Question : Two numbers are in the ratio 9 : 7. If their HCF is 6, find their LCM.

Option 1: 189

Option 2: 126

Option 3: 378

Option 4: 252

Question : If LCM of two numbers is 72 and their product is 1728 , then what is the HCF of the numbers?

Option 1: 1

Option 2: 18

Option 3: 24

Option 4: 12

Question : Two numbers are in the ratio of 3 : 5. If their HCF is 8, then find the numbers.

Option 1: 36 and 60 

Option 2: 12 and 20 

Option 3: 48 and 80 

Option 4: 24 and 40 

Question : Directions: Which two numbers should be interchanged to make the given equation correct?
144 ÷ 24 × 6 + 12 – 18 = 78

Option 1: 6 and 18

Option 2: 24 and 12

Option 3: 24 and 6

Option 4: 24 and 18

Question : If the ratio of the volumes of two cylinders is 6 : 5 and the ratio of their heights is 5 : 24, then what is the ratio of their radii?

Option 1: 12 : 7

Option 2: 5 : 6

Option 3: 1 : 2

Option 4: 12 : 5